TY - GEN
T1 - Metallurgical approach for the development of heat treatments applied to 316L stainless steel cold spray coatings
AU - Brassart, Laury Hann
AU - Gourgues-Lorenzon, Anne Françoise
AU - Besson, Jacques
AU - Delloro, Francesco
AU - Haboussa, David
AU - Rolland, Gilles
N1 - Publisher Copyright:
Copyright © 2021 ASM International® All rights reserved.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Industries developing cold-spray processes aim at producing dense and resistant coatings. Controlling microstructure and inter-particular fracture characteristics of sprayed coatings is essential to improve their properties. To do so, post-spraying heat treatment is a promising approach. This work addresses the development of such heat treatments and focuses on the analysis of recovery and recrystallization. Different heat treatment parameters were explored, namely, holding temperature and time, heating rate, and heating method. This approach revealed a competition between recrystallization and other microstructural evolution mechanisms, such as precipitation and porosity coalescence. An optimized heat treatment, allowing microstructural softening and adequate mechanical properties, was sought after. First, differential scanning calorimetry measurements applied to as-sprayed coatings enabled to identify recovery and recrystallization temperature ranges. Then, a variety of heat treatments was applied, involving long-time isothermal holdings as well as shorter cycles. Microstructure analysis and hardness measurements allowed making a first selection of treatment conditions.
AB - Industries developing cold-spray processes aim at producing dense and resistant coatings. Controlling microstructure and inter-particular fracture characteristics of sprayed coatings is essential to improve their properties. To do so, post-spraying heat treatment is a promising approach. This work addresses the development of such heat treatments and focuses on the analysis of recovery and recrystallization. Different heat treatment parameters were explored, namely, holding temperature and time, heating rate, and heating method. This approach revealed a competition between recrystallization and other microstructural evolution mechanisms, such as precipitation and porosity coalescence. An optimized heat treatment, allowing microstructural softening and adequate mechanical properties, was sought after. First, differential scanning calorimetry measurements applied to as-sprayed coatings enabled to identify recovery and recrystallization temperature ranges. Then, a variety of heat treatments was applied, involving long-time isothermal holdings as well as shorter cycles. Microstructure analysis and hardness measurements allowed making a first selection of treatment conditions.
UR - https://www.scopus.com/pages/publications/105021982511
M3 - Conference contribution
AN - SCOPUS:105021982511
T3 - International Thermal Spray Conference and Exposition: Versatile Surface Engineering for Environmental Solutions, ITSC 2021 - Proceedings
SP - 177
EP - 188
BT - International Thermal Spray Conference and Exposition
A2 - Azarmi, Fardad
A2 - Chen, Xing
A2 - Cizek, J.
A2 - Cojocaru, Cristian V.
A2 - Jodoin, Bertrand
A2 - Lau, Y.
A2 - Fernandez, Ruben
A2 - Ozdemir, O.
A2 - Jazi, H. Salimi
A2 - Toma, F.
PB - ASM International
T2 - 2021 International Thermal Spray Conference and Exposition, ITSC 2021
Y2 - 24 May 2021 through 27 May 2021
ER -